DIY PT7313E Electronic Volume Sound Mixer Board Kit<br>Description:<br> This circuit uses a single chip (CPU) to control the sound， and a wide range of applications in car audio， LCD TVs and other products of the electronic volume IC. PT7313 responsible for volume and sound processing， deep and powerful overall sound， treble clear-cut， sound excellent.<br> The default value is treble settings 0DB， bass + 4DB， adjust sound after power is restored to the default values. You can adjust the treble， bass， and the total amount of power amplifier circuit and according to their own personal preferences using an encoder of the board.  Feature:    1. Use an encoder with a touch of a button to select and adjust: treble \/ bass and total volume   2. With two external audio signal input port by a touch of a button by the CPU control: AUX_1 and AUX_2 input selection (eg: AUX_1 connection DVD audio， AUX_2 connected to a computer or MP3 mobile phones and other audio sources， by selecting the button you can easily convert input source signals， do not plug the audio cable)， to achieve two-way audio input， the operation is very simple.       Power requirements:         Enter a single power supply， optional AC or DC input DC power supply can be， regardless of the positive and negative access. Input voltage range: AC 9V ~ 12V， DC 10V ~ 18V.     Increased power and memory function， the overall volume of memory before the power failure， as you do not need this feature， you do not soldered memory chips <br>Function:<br> INPUT key : ( input selection button) after power default audio signal input port (AUX-1)， press the INPUT button click， the system switches to the audio signal input port (AUX-2) status.<br> MODEL button: The sound board treble， bass and overall volume is adjusted only up complete with a touch of a button encoder， operation is very simple. Press the touch of a button on the encoder， press， rotate around to adjust the treble， press， adjustable bass， and then adjust the overall volume of what that is. Cycle options: Treble &amp;rarr; bass &amp;rarr; total volume. Adjust the volume can be rotated 360 degrees clockwise rotation of the encoder volume increases， counter-clockwise to reduce the volume. After the system is powered on， the default working in total volume regulation， (such as the choice to adjust the treble， when the stop regulation， three seconds after the automatic return to the total volume adjustment status.) When adjusting the audio encoder next LED lights are flashing prompt.  Package included:  1 x DIY PT7313E Electronic Volume Sound Mixer Board Kit